Valve.



No. 687,247. Patented Nov. 26, l90l.

C. A. MARRDER.

VALVE.

(Application filed Mar. 22, 1898.)

\ 2 Sheets-Shet (No Model) wit-1* jybz Q 7 jzvenivr Patented Nov. 26, I90l. c. A. MARRDEB."

VALVE.

fAnplication filed Mar. 22, 1 898.)

2 Sheets- Sheet 2.

(No Model.)

Vlfz'tneaaes:

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' NITED STATES PATENT OFFICE.

CHARLES A. MARRDER, OF NEW YORK, N. Y., ASSIGNOR, BY MESNE ASSIGN- MENTS, TO THE SIGNAL AND CONTROL COMPANY, OF BOROUGH OF MANHATTAN, NEW YORK, N. Y., A CORPORATION OF WEST VIRGINIA.

VALVE.

SPECIFICATION forming part of Letters Patent N 0. 687,247, dated November 26, 1901. Application filed March 22, 1898. Serial No. 674.846. (No model.)

T on whom it mayconcem:

Be it known that I, CHARLES A. MARRDER, a citizen of the United States, residing at New York city, in the county and State of New York, have invented a certain new and usef ul Improvement in Valves, (Case A,) of which the following is a specification.

My invention relates to main valves controlled by auxiliary valves, and particularly 1o: to'that class in which the auxiliary valve is electrically controlled or actuated; and my object is to produce a more compact and efiective construction and to construct an auxiliary valve which will permit the operating-mag- I 5 not being materially reduced in size, and thereby reduce the battery-power required. Heretofore the battery-power required to operate an effective form of auxiliary valve was quite large and the battery comprised a considerable number of cells. Where the valve is operated frequently in a short space of time, the battery-power runs down so rapidly that in a short time the current is insufficient to operate the magnet, and hence the apparatus is rendered inoperative. This is an important matter, particularly where the valve is employed for operating the whistle on ships, where the whistle is apt to be operated at short intervals during long periods, as in a fog.

My invention is illustrated in the accompanying drawings, in which- Figure 1 is a side elevation; Fig. 2, a vertical section on the line 2 2 of Fig. 1; Fig. 3, a vertical cross-section on the line 3 3 of Fig. 5 2; Fig. 4, a central horizontal section, and

Fig. 5 a vertical section of a slight modification of the auxiliary valve shown in Fig. 3.

Referring to the drawings, A indicates the inlet side of the main valve, and A the out- 0 let side.

B is the main valve, havinga seat in the partition B and closing communication between the inlet and outlet sides. The valve B is carried by a stem 1), having an enlarged-end b passing through the wall a, said 'end b being adapted to be actuated by the ordinary form of hand-lever. The opposite end of the valvestem has a bearing in a cap a. In the chamber between the cap a and the main valve B works the piston 0, formed integrally with the valve-stem. The steam-pressure in the inlet side of the valve acts upon the right-hand side of the piston O and upon the valve B, and to balance the pressure upon the right-hand side of the piston C, Iprovide aport d, which communicates with the port at, leading to the lefthand side of the piston 0. Thus the main valve is held to its seat by the pressure thereon. The passage of steam from the inlet side of the valve through the ports d and cl is controlled by the auxiliary valve D, which is normally held open by the pressure from the inlet side of the main valve. To open the main valve, the auxiliary valve D is shifted so as to cut off communication between the ports 61 and d and establish communication between the port (1 and the exhaust-port d whereupon the pressure upon the left-hand side of the piston O is reduced, and the main valve becomes overbalanced by the pressure from the inlet side and is caused to open. The exhaust -port (1 preferably opens into the outletside of the main valve; but, if desired, the steam from theleft-hand side of the piston-G maybe allowed to escape through the port CF, in which case the plug 61 will be removed. The valve D is formed at the lower end of the valve-stem D, which projects upwardly through the plug D -and in line with the plunger E, carried by the arvided with a valve-seat and ports at, which communicate with the exhaust-ports d or d. Magnet E is contained in a water-tight casing F, having a screw-threaded extension F for receiving the coupling end of a cable carrying the conducting-Wires and which coupling end will be provided with suitable terminals adapted to make contact with the terminals e and from which the wires 6 extend through the casing F to suitable insulated binding-posts, to which the magnet- Windiug is connected. The magnet-casing F is provided with brackets f,by m cans of which the case is secured to the main valve,

In Fig. 5, which shows a modification of an auxiliary valve, it will be seen that the position of the parts is reversed, thus affording a better bearing for the auxiliary-valve stem, and thereby insuring against the sticking of the valve. In this view, (Z is a port leading from the inlet side of the main valve, d a port leading to the left-hand side of the piston C, and (Z the exhaust-port leading to the outlet side of the main valve. The auxiliary valve D is formed at the middle of the valve-stem D, and the plug D is screwed into the casing from the underside, and the lower end of the valve-stem is lengthened, so as to Work in the bearing 3 in the plug D In the position shown the auxiliary valve D is openthat is, ports (Z and cZ are in com municationand the exhaust-port is closed.

\Vhat I claim is- 1. The combination with a main valve normally held to its seat by direct pressure from the inlet side of the main-valve chamber, of a balanced piston mounted upon the valve stem, an auxiliary-valve chamber, a normally open inlet-port (Z between said chamber and the inlet side of the main valve, an open port between said chamber and the chamber at the rear side of said piston, an exhaust-port for said auxiliary-valve chamber, an auxiliary valve normally closing said exhaust-port, and means for moving said valve to open said exhaust-port and for simultaneously closing inlet-port (Z, whereby the pressure from the inlet side of the main valve overbalances said piston and effects the opening of the main valve.

2. The combination with a main valve normally held to its seat by direct pressure from the inlet side of the main-valve chamber, of a balanced piston mounted upon the valvestem, an auxiliary-valve chamber, a normally open inlet-port (Z between said chamber and the inlet side of the main valve, an open port between said chamber and the chamber at the rear side of said piston, an exhaust-port forsa-id auxiliary-valve chamber, an auxiliary valve actuated by the pressure within the valve-chamber for normally closing said exhaust-port, and means for moving said valve to open said exhaust-port and for simultaneously closing inlet-port (Z, whereby the pressure from the inlet side of the main valve overbalances said piston and effects the opening of the main valve.

The combination with a main valve normally held to its seat by direct pressure from the inlet side of the main-valve chamber, of a balanced piston mounted upon the valvestem, an auxiliary-valve chamber, a normally Open inlet-port d between said chamber and the inlet side of the main valve, an open port between said chamber and the chamber at the rear side of said piston, an exhaust-port connecting said auxiliary-valve chamber with the outlet side of the main-valve chamber, an auxiliary valve normally closing said exhaust-port, and means for moving said valve to open said exhaust-port and for simultaneously closing inlet-port (Z, whereby the pressure from the inlet side of the main valve overbalances said piston and effects the opening of the main valve.

4. The combination with a main valve normally held to its seat by direct pressure from the inlet side of the main-valve chamber, of a balanced piston mounted upon the valvestem, an auxiliary-valve chamber, anormally open inlet-port (Z between said chamberand theinlet side of the main valve, an open port between said chamber and the chamber at the rear side of said piston, an exhaust-port connecting said auxiliary-valve chamber with the outlet side of the main-valve chamber, an auxiliary valve actuated by the pressure within the valve-chamber for normally closing said exhaust-port, and means for moving said valve to open said exhaust-port and for simultaneously closing inlet-port (Z, whereby the pressure from the inlet side of the main valve overbalances said piston and effects the opening of the main valve.

5. The combination with a main valve normally held to its seat by direct pressure from the inlet side of the main-valve chamber, of a balanced piston mounted upon the valvestem, an auxiliary-valve chamber, a normally open inlet-port (Z between said chamber and the inlet side of the main valve, an open port between said chamber and the chamber at the rear side of said piston, an exhaust-port for said auxiliary-valve chamber, an auxiliary valve normally closing said exhaust-port, and electrically-operated means for moving said valve to open said exhaust-port and for simultaneously closing inlet-port cZ, whereby the pressure from the inlet side of the main valve overbalances said piston and effects the opening of the main valve.

6. The combination with a main valve normally held to its seat by direct pressure from the inlet side of the main-valve chamber, of a balanced piston mounted upon the valvestem an auxiliary-valve chamber, a normally open inlet-port d between said chamber and the inlet side of the main valve, an open port between said chamber and the chamber at the rear side of said piston, an exhaust-port for said auxiliary-valve chamber, an auxiliary valve actuated by the pressure within the valve-chamber for normally closing said exhaust-port, and electrical1y-0perated means for moving said valve to open said exhaustport and for simultaneously closing inlet'port (Z, whereby the pressure from the inlet side of the main valve overbalances said piston and effects the openingof the main valve.

7. The combinationwith a main valve normally held to its seat by direct pressure from the inlet side of the main-valve chamber, of a balanced piston mounted upon the valvestem, an auxiliary-valve chamber, a normally open inlet-port d between said chamber and the inlet side of the main valve, an open port between said chamber and the chamber at the rear side of said piston, an exhaust-port connecting said auxiliary-valve chamber with the outlet side of the main-valve chamber, an

auxiliary valve normally closing said exhaustport,and electrically-operated means for moving said valve to open said exhaust-port and for simultaneously closing inlet-port d,whereby the pressure from the inlet side of the main valve overbalances said piston and effects the opening of the main valve.

8. The combination with a main valve nor-' mally held to its seat by direct pressure from the inlet side of the main-valve chamber, of a balanced piston mounted upon the valvestem, an auxiliary-valve chamber, a normally open inlet-port d between said chamber and the inlet side of the main valve, an open port between said chamber and the chamber at the rear side of said piston, an exhaust-port connecting said auxiliary-valve chamber with the outlet side of the main-valve chamber, an auxiliary valve actuated by the pressure within the valve-chamber for normally closingsaid exhaust-port,and electrically-operated means for moving said valve to open said exhaustport and for simultaneously closing inlet-port (1, whereby the pressure from the inlet side of the main valve overbalances said piston and effects the opening of the main valve.

This specification signed and witnessed this 24th day of December, 1897.

CHARLES A. MARRDER. Witnesses:

W. PELZER, JOHN J. AYLWARD. 

